402 Answered Questions for the topic astronomy
Astronomy Physics
05/30/25
Meaning of a "iRocket Science" Equation
Please help a non-rocket scientist out:What does this equation mean?: GxmxM/R=mxVESC2 /2And/or where can I find out more about this?It appears on a NASA Kennedy Space Center, Florida, "iRocket...
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How do I apply specific astronomy concepts I have learned to calculations?
Hi, I have a few questions about concepts I've learned and using them with equations.Firstly, I know there are differences in calculations when it comes to north and southern hemispheres. When...
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Astronomy Physics
03/23/25
Methods to calculate speed and distance of objects in orbit
I know that you can use Kepler's second law to calculate the speed an object travels at perihelion but arethere any other methods that I can use to calculate this? For example if I'm only given the...
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Astronomy Physics
03/14/25
How to calculate sidereal period
How do I calculate the sidereal period of planets when I'm not given the orbital period?I know the Earth has an orbital period of 365.25 days, but then we are only given the time between successive...
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Astronomy Physics
12/11/24
How do I find the orbital angular momentum of one star in a binary star system?
As a hobby, I've been trying to study binary stars on a physics level, and I'm pretty confused as to how to approach problems since I've never really done this sort of math before. I'm using this...
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Astronomy Physics
11/14/24
Plotting a H-R diagram
When plotting a H-R diagram, I know that the temperature is plotted against luminosity and for a color-magnitude diagram, the absolute magnitude is potted against the color. What is the difference...
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Astronomy Physics
11/11/24
How do I calculate luminosity?
If given the distance and the apparent magnitude of a star, I can calculate the absolute magnitude. Is it possible to convert this absolute magnitude into a luminosity? If so, how?
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Astronomy Physics
10/22/24
How do I identify objects in a binary star system?
The question is related to two objects (1 and 2) in a binary system ( with circular orbits). The objects are a pulsar and a white dwarf (it's not specified which object is which). We are given the...
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Astronomy
04/30/24
Could the mining of a small moon or astroid affect its orbit?
I am writing a science fiction novel, and I am postulating that removing minerals from a small moon to the planet below could destabilize the moon's orbit eventually causing it to lose orbital...
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Astronomy Math
03/02/24
this question is about astronomy math
Saturn has a density of p=687kg/m3. If you also know that the mass of Saturn is m=5.68kg x10^26, then calculate the radius of Saturn using the definition of density and the formula for the volume...
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Astronomy
12/02/23
A comet has an orbital period of 96 years. What is its average distance (in AU) from the Sun?
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Astronomy
09/08/23
Find the comet's perihelion and aphelion distances. Express your answers in astronomical units to three significant figures separated by a comma.
De Vico's Comet orbits the Sun every 74.0 yearsand has an orbital eccentricity of 0.96.Find the comet's perihelion and aphelion distances.Express your answers in astronomical units to three...
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Astronomy Physical Science
06/22/23
How can I remember where the moon is located when it is a new moon or a full moon?
The moon ORBITS (revolves) the earth as the earth revolves around the sun. The positions of these 3 celestial bodies cause the various phases of the moon. When the moon is located between the...
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Astronomy Physics
02/24/23
If Jupiter is 318x bigger than Earth, why is the surface gravity also not 318x stronger than Earths?
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Astronomy
02/14/23
How to be best friends with a Scorpio in the shortest, yet minimal ways
Hi, so I'm an Ophiuchus, right? I want to be best friends with a Scorpio in the shortest amount of time, with the most minimal effort. How do I?
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Astronomy
02/03/23
What is the difference between a rotational period and a solar day?
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if a planet was located approximately 25.0e3 light years from the center of a galaxy and orbits that center once every 204.6e6 years, how fast is the planet traveling around the galaxy in km/hr?
if needed use 3e8 m/a for the speed of light.
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Astronomy
11/22/22
How would people prove that dark matter exists, and how would it change are understanding of the known universe.
Astronomy
11/15/22
What is known as the red planet?
It is next to the Earth. It is red, but not hot. It is actually cooler than Earth.
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Astronomy
11/04/22
What planets can you see from the moon?
I'm doing a painting inspired of a singer that just came out with a song, and since he is from South Korea he needs to go to the military for 3 years I don't want to forget about him nor the band...
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Astronomy
10/22/22
luminosity of star
Star A has a radius 11 times the Sun's radius. If its temperature is the same as the Sun's, then the luminosity of Star A is times that of the Sun.
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